The effect of simultaneous heat and mass transfer on the rate of a heterogeneous catalytic reaction has been studied in the case where the reaction rate may be regarded as concentration independent. Approximate analytic solutions of transport equations for catalyst particles of slab or cylindrical s
A Model of Porous Catalyst Accounting for Incipiently Non-isothermal Effects
✍ Scribed by Francisco J Mancebo; José M Vega
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 317 KB
- Volume
- 151
- Category
- Article
- ISSN
- 0022-0396
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✦ Synopsis
An approximate model accounting for incipiently non-isothermal effects is derived from a well-known model of porous catalyst for appropriate, realistic limiting values of the parameters. In this limit, the original model is a singularly perturbed, m-D reaction diffusion system, and the approximate model is given by the m-D heat equation with nonlinear boundary condition, coupled with infinitely many (if m 2) 1-D semilinear parabolic equations, one for each point of the boundary of the spatial domain. Some limiting cases are still considered in the approximate model that lead to further simplifications.
📜 SIMILAR VOLUMES
Based on the theory of porous media (mixture theories extended by the concept of volume fractions), a model describing the dynamical behaviour of a saturated binary porous medium is presented including both geometrical and material non-linearities. Transformed toward a weak formulation, the model eq